I found out the reason and a workaround to fix it, but I think it's a bug nonetheless:
gnupg-agent isn't run at kde runtime, maybe because it's considered to be too unstable? I resolved the issue by following the howto at "http://kmail.kde.org/kmail-pgpmime-howto.html". Thanks, Thomas -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]